the department has no record of 26-year-old tamerlan tsarnaev ever applying. massachusetts state law does say those under 21 can get a firearms i.d. card. they can own a shotgun or a rifle holding less than ten rounds but according to authorities, the two brothers had at least six bombs handguns, a rifle and more than 250 rounds of ammunition. we're back with more show after the break. stay with us. (vo) earth day isn't just for tree huggers, it's a wake up call to mankind. celebrate earth day with an afternoon of documentaries about the planet we all share. >> what are the forces that are blocking change? (vo) and stay tuned at 2 eastern for an exclusive premiere of leonardo dicaprio's award winning film, the 11th hour. >> we face a convergence of crises, all of which are a concern for life. this show is about analyzing criticizing, and holding policy to the fire. are you encouraged by what you heard the president say the other night? is this personal or is it political? a lot of my work happens by doing the things that i am given to doing anyway. staying in